Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
dlehddud:
--- Quote from: nid404 on November 07, 2009, 10:14:46 am ---in case they don't mention the HCl reaction.....write both...they won't cut ur marks....they'll be impressed :D
--- End quote ---
bt isnt the whole point of the qualitative analysis to differentiate between aluminum and zinc?
cos they both produce white ppt which dissolve in NaOH and aluminium produces insoluble white ppt in NH3 whilst zinc still produces a white ppt that dissolves in NH3..
isn't that why they mentioned ammonia? It's just bcos i've never heard of the HCl part,,
@d!_†oX!©:
--- Quote from: nid404 on November 07, 2009, 11:21:55 am ---@adi_toxic- No. They don't move with the same velocity. There's an equation to find out the velocities of molecules......not for igcse...so don't bother..
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ohhkkk...u sure naa????
Thanks den....
nid404:
yaa im sure. Check the maxwell boltzman graph(attached) for an idea.....
@d!_†oX!©:
ooohhhhkkaaayyyy!!!!
bt i didnt understand anything from dt graoh lol.. :P
its kk i got my ans nid!!Thanks
nid404:
--- Quote from: @d!_†oX!© on November 07, 2009, 11:31:03 am ---ooohhhhkkaaayyyy!!!!
bt i didnt understand anything from dt graoh lol.. :P
its kk i got my ans nid!!Thanks
--- End quote ---
oops!!
anyway u got it naa...bas :D
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